Carbon Black Hr Ms Q355 S355jr 2mm 4mm 6mm Hot Rolled Steel

• Customization: Available
• After-sales Service: 7days/24h
• Warranty: 7days/24h
• Model NO.: Q355
• Certification: ISO
• Surface Treatment: Black
• Technique: Hot Rolled
• Application: Boiler Plate
• Edge: Slit edge
• Stock: Stock
• Thickness: 1-250mm
• Thickness Tolerence: +-0.02mm
• Width: 0.6-3m
• Width Thickness: +-2mm
• Hardness: 40hrb-95hrb
• Material: Q235 Q355 S235jr S355jr A36 Ah36 A53-F St52 A283 G
• Surface: Clean, Blasting and Painting According to Customer
• Certificate: ISO, SGS
• MOQ: 25 Tons
• Payment Term: 30% T/T Advance + 70% Balance
• Price Term: CIF CFR Fob EXW
• Delivery Date: Within 15-20 Days After Receiving Deposit or L/C
• Export Packing: Waterproof Paper, and Steel Strip Packed. Standard
• Capacity: 500,000 Tons/Year
• Application Range: Widely Used in Ship, Automobile, Bridges, Building
• Transport Package: Standard Seaworthy Packing
• Specification: 15-25 tons per coil
• Trademark: ZUNKAI
• Origin: Shandong
• HS Code: 7208370000
• Production Capacity: 50000 Tons/Month

Product Description

 

 

   HOT ROLLED STEEL COIL
 

Hot rolled coils are made of slabs (mainly continuous cast billets), heated in a heating furnace and then rolled by roughing units and finishing units.

The hot steel strip from the last mill of the finishing mill is cooled to the set temperature by laminar flow and coiled into hot rolled steel strip by the winder.
 

Product Parameters

 

Product Name	Hot rolled steel coil
Standard	AISI, ASTM, BS, DIN, GB, JIS
Thickness	Plate: 0.35-200mm Strip: 1.2-25mm
Width	900,1200,1250,1500mm or customized
Tolerance	Thickness: +/-0.02mm, Width:+/-2mm
Surface	Iron gray (low carbon plate), brown (special alloy plate, the high carbon plate), partial ochre (weather resistance), with temperature oxidation pattern, than manufacture rough surface
Special Use	High-strength Steel Plate
Application	Transport, construction, shipbuilding, gas containers, automobile, bridge, etc
Supplier	HBIS, AnSteel, BaoSteel, etc
Material	Q235 Q355 S235jr S355jr A36 AH36 A53-F ST52 A283 Gr.C SS400
Edge Type	Slit edge
Place of origin	Shandong, China
Delivery Time	Stocks within 7 days, customized around 10-15 working days.
Package	tied up with steel strips and wrapped with water proof paper
Packing	Export standard package
Advantages	1. Reasonable price with excellent quality 2. Abundant stock and prompt delivery 3. Rich supply, export experience and sincere service

Product Description

 

Hot-rolled coils are made of slabs as raw materials, and are made into strips by rough rolling mills and finishing mills after heating.
The hot steel strip from the last rolling mill of the finishing rolling is cooled to the set temperature by laminar flow, and is coiled into a steel coil by the coiler.

The finishing line (leveling, straightening, cross-cutting or slitting, inspection, weighing, packaging and marking, etc.) is processed into steel sheets, flat rolls and slitting steel strip products.

Due to its high strength, good toughness, easy processing and good weldability and other excellent properties, hot continuous rolled steel sheet products are widely used in ships, automobiles, bridges, construction, machinery, pressure vessels and other manufacturing industries.

Therefore, the demand for HRC is huge.
 

Carbon steel is an iron-carbon alloy with a carbon content of 0.0218%~2.11%. It is also known as carbon steel. It also contains small amounts of silicon, manganese, coal and steel. Generally, the higher the carbon content in carbon steel, the greater its hardness and strength.

Q355B is a low-alloy high-strength structural steel, Q355B executive standard is GB/T1591-2018. With good comprehensive mechanical properties, low temperature performance can also be, plasticity and weldability, It is widely used in engineering, mining machinery, bridges, vehicles, ships, construction, pressure vessels, special equipment, etc.

Chemical Composition (Hot rolled)

Hot rolled steel chemical composition based on heat analysis.

 

Chemical Composition (Heat analysis), %, ≤
Steel Grade	Quality Grade	C	Si	Mn	P	S	Deoxidation Method
Q235	Q235A	0.22	0.35	1.40	0.045	0.050	Rimmed / Killed
	Q235B	0.20	0.35	1.40	0.045	0.045	Rimmed / Killed
	Q235C	0.17	0.35	1.40	0.040	0.040	Killed
	Q235D	0.17	0.35	1.40	0.035	0.035	Exceptionally Killed

Chemical Composition (Heat Analysis), %, ≤
Steel Grade	Quality Grade	C	Si	Mn	P	S	Cr	Ni	Cu	N
Q355	Q355B	0.24	0.55	1.6	0.035	0.035	0.30	0.30	0.40	0.012
	Q355C	0.20			0.030	0.030				0.012
	Q355D	0.20			0.025	0.025				-

 

Material Mechanical Properties

Notes:

• 1 MPa = 1 N/mm2
• 1 GPa = 1 kN/mm2

Q235 steel mechanical properties are listed in the data sheet below, including yield strength, tensile strength and elongation, etc.

Yield Strength (MPa, ≥), Thickness or Dia. (d) mm							Tensile Strength (MPa)
Steel Grade	Quality	d≤16	16< d ≤40	40< d ≤100	100< d ≤150	150< d ≤200	d≤100
Q235	Q235A	235	225	215	195	185	370-500
	Q235B
	Q235C
	Q235D

Elongation (≥ %); Thickness or Dia. (d) mm
Steel Grade	d≤40	40< d ≤60	60< d ≤100	100< d ≤150	150< d ≤200
Q235	26	25	24	22	21

 

Q355 steel mechanical properties are listed in the data sheet below, including yield strength, tensile strength and elongation, etc.

Yield Strength (≥ MPa), Thickness or Dia. (d) mm
Steel Grade	Quality Grade	d≤16	16< d ≤40	40 < d ≤63	63 < d ≤ 80	80< d ≤ 100	100< d≤ 150	150 < d≤ 200	200 < d ≤ 250	250 < d ≤ 400
Q355	Q355B	355	345	335	325	315	295	285	275	-
	Q355C									-
	Q355D									265
Q355N	All									-

Tensile Strength MPa; Dia. (d) mm
Steel Grade	Quality Grade	d≤100	100< d ≤250	250< d ≤400
Q355	Q355B	470-630	450-600	-
	Q355C			-
	Q355D			450-600
Q355N	All			-

Elongation (%); Dia. (d) mm; (Hot rolled)
Sample direction	d≤40	40< d ≤63	63< d ≤100	100< d ≤150	150< d≤ 200	250< d ≤400
Transverse	20	19	18	18	17	17
Vertical	22	21	20	18	17	17

Classification of hot rolled coils based on thickness:

 

Hot-rolled coils generally include medium-thickness wide steel strip and thin wide steel strip.

1. Medium-thickness wide strip refers to the thickness of ≥ 3 mm and < 20 mm, width ≥ 600 mm, with continuous hot rolling mill or furnace coil mill and other equipment production, delivery of steel coils.
2. Thin wide steel strip refers to thickness <3 mm, width ≥ 600 mm, with continuous hot rolling mill or furnace coil mill or thin slab continuous rolling and other equipment production, delivery of steel coils.





 

Product Application

 

Hot-rolled coil is the raw material for almost all steel products, such as cold-rolled coil, galvanized coil, pre-painted coil, angle steel, H Beam, flat steel, steel pipe, etc.

Uses of hot rolled steel:

(1) Structural steel: mainly used in the production of structural steel parts, bridges, ships and vehicles.

(2) Automotive structural steel: high strength steel plates with good stamping and welding properties, used in the production of automotive FRAME, WHEEL, etc.

(3) hot-rolled special steel: general mechanical structure with carbon steel, alloy steel, tool steel, after heat treatment works for the production of various mechanical parts.

(4) Cold-rolled raw plates; used for the production of various cold-rolled products, including CR, GI, colour coated plates, etc.

(5) Steel plate for steel pipes: with good processing performance and pressure strength, used for the production of high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an internal volume of 500L or less.

(6) Steel plates for high-pressure vessels: with good processing performance and pressure strength, used for the production of high-pressure gas pressure vessels filled with LPG, acetylene gas and various gases with an internal volume of 500L or less.

Delivery photos for reference

 

The package is according to the standard seaworthy export packing or as the customers' request.

The inner size of container is below:

20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high) about 24-26cbm, 28mts
40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high) about 54cbm, 28mts
40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high) about 68cbm, 28mts

 

Shipping term:

1) 20ft container: 28tons (Can load 5.8m Max)
2) 40ft container: 28tons (Can load 11.8m Max)
3) more than 100tons: can pack by bulk vessel
4) as your requirement.

 

Company Profile

 

Jinan Zunkai Group founded in 2002,with five branch companies and is well-founded.

Our annual sales nearly one billion,about 300000 tons steel.

Our company is located in jinan City,ShanDong Province.
We entered into a strategic partnership with Bao Steel, laiwu Steel, Rizhao Steel, Handan Steel, Anyang Steel, Maanshan Steel and other domestic large steel companies.

Zunkai is the largest steel aluminum and copper supplier in Shandong Provinces,

we also have ourselves raw materials process factory with 100000 Square meter for steel laser cutting, surface treatment and other further processing, and our stock always more than 20000 tons.

Zunkai Group mainly engaged in: aluminum sheet, copper tube, galvalume steel, PPGI, galvanized steel, steel plate, round bar, steel pipe, stainless steel product, angle bar, steel pile, H beam, I beam, angle, Channel flat steel ect.

Our good quality and reliable service will be your best trusted partner. Sincerely wish to building long and regular business with you forever.
 

Certifications

 

1. Our company has the official export qualification and ISO 9001-2008 certification SGS, TÜV, Certification.

2. All products will be issued a quality inspection report(MTC) before leaving the factory.

3. We accept any third party inspection such as SGS to inspect the goods.

Our Partner

 

Our main markets are Southeast Asia, the Middle East, Europe, South America, North America, Central America and East Asia.
 

We believe that good quality and considerate service are the basis for good cooperation, and we value the development of long-term relationships with our customers!

 

FAQ

Q: Will the Test Certificate meet EN10204 3.1?

A: We will provide Original Mill Test Certificate certified to EN10204 3.1 for products in stock or further processing needed.

 

Q: Once the products received by customer were found not comply with the products or contract demands, what will you do?

 

A: We will compensate the customer for all the loss without any hesitation

 

Q: How long is your delivery time?

 

A: Generally it is 2-5 days if the goods are in stock or it will need 7-20 days if the goods need to be customized

 

Q: Do you provide samples ? Is it free or extra ?

 

A: Yes, we can offer free samples.

 

Q: What is your terms of payment?

 

A: 30% Prepayment and balance see B/L copy or can negotiable.